RE: Double Throw Spark Gap (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 10 Oct 2007 21:25:04 -0600
From: S&JY <youngs@xxxxxxxxx>
To: 'Tesla list' <tesla@xxxxxxxxxx>
Subject: RE: Double Throw Spark Gap (fwd)

David,

Your explanation below is exactly correct, and is how I run my SPDT RSG.
There must be two sets of stationary gaps, such that as one set is aligned
with a rotor electrode, the other set is half way between rotor electrodes.
Yes, there still is one common connection to the power supply, but it has no
effect on the power supply during the discharge (main bang).  It works
beautifully - independent control of variable rate break rate & bang energy,
no ballast needed, very easy on the power source (no shorting it, not even
through a charging reactor), no trailing arcs in RSG, etc.

--Steve Y. 

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx] 
Sent: Wednesday, October 10, 2007 7:45 PM
To: tesla@xxxxxxxxxx
Subject: Re: Double Throw Spark Gap (fwd)


---------- Forwarded message ----------
Date: Wed, 10 Oct 2007 20:25:59 +0000
From: David Rieben <drieben@xxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Cc: drieben@xxxxxxxxxxx
Subject: Re: Double Throw Spark Gap (fwd)

Hi Bart,

<SNIP>  Or you could keep the flying
electrodes in their usual symetrical periphrial alignment
and off set the two pairs of stationary electrodes. It seems 
that you would have to have one pair of "charging" stationary 
electrodes and one pair of "discharging" stationary electrodes 
and the flying electrodes would have to be spaced to where one 
did NOT align with the "charging" stationaries at the same time
that another flying electrode was aligned with the "discharge" 
stationaries. Immagine the stationary electrode pairs set at
3 and 9 o'clock position - 9 o'clock for charging circuit, 3 o'
clock for discharging. Then while a flying electrode was aligned
with the 9 o'clock "charging" position, you could not SIMULTA-
NEOUSLY have a another flying electrode lined up in the 3 o'clock
"discharge" posistion. Otherwise, you would be defeating the pur-
pose of charge/discharge isolation. And there would still have to 
be a "common" return between the charge and discharge circuit 
so even here I don't perceive TOTAL circuit isolation, although I 
do believe that the power supply could be removed from "shorting" 
into the discharge cycle in this manner. Is this making any sense to 
anyone else, as it's kind of hard to fully explain in words and I don't
have access to any schematic writing or drafting program.


David Rieben